Messages in this thread Patch in this message | | | From | kan.liang@linux ... | Subject | [PATCH] perf test: Basic branch counter support | Date | Tue, 7 Nov 2023 09:44:11 -0800 |
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From: Kan Liang <kan.liang@linux.intel.com>
Add a basic test for the branch counter feature.
The test verifies that - The new filter can be successfully applied on the supported platforms. - The counter value can be outputted via the perf report -D
Signed-off-by: Kan Liang <kan.liang@linux.intel.com> --- tools/perf/tests/shell/record.sh | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/tools/perf/tests/shell/record.sh b/tools/perf/tests/shell/record.sh index 4fbc74805d52..2783e867c07c 100755 --- a/tools/perf/tests/shell/record.sh +++ b/tools/perf/tests/shell/record.sh @@ -11,6 +11,9 @@ err=0 perfdata=$(mktemp /tmp/__perf_test.perf.data.XXXXX) testprog="perf test -w thloop" testsym="test_loop" +cpu_pmu_dir="/sys/bus/event_source/devices/cpu*" +br_cntr_file="/caps/branch_counter_nr" +br_cntr_output="branch stack counters" cleanup() { rm -rf "${perfdata}" @@ -154,10 +157,37 @@ test_workload() { echo "Basic target workload test [Success]" } +test_branch_counter() { + echo "Basic branch counter test" + # Check if the branch counter feature is supported + for dir in $cpu_pmu_dir + do + if [ ! -e "$dir$br_cntr_file" ] + then + echo "Not support branch counter feature [Skipped]" + return + fi + done + if ! perf record -o "${perfdata}" -j any,counter ${testprog} 2> /dev/null + then + echo "Basic branch counter test [Failed record]" + err=1 + return + fi + if ! perf report -i "${perfdata}" -D -q | grep -q "$br_cntr_output" + then + echo "Basic branch record test [Failed missing output]" + err=1 + return + fi + echo "Basic branch counter test [Success]" +} + test_per_thread test_register_capture test_system_wide test_workload +test_branch_counter cleanup exit $err -- 2.35.1
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